Patent application number | Description | Published |
20130076761 | GRAPHICS PROCESSING SYSTEMS - In a tile-based graphics processing system having plural rendering processors, the set of tiles | 03-28-2013 |
20130076762 | OCCLUSION QUERIES IN GRAPHICS PROCESSING - The fragment processing pipeline | 03-28-2013 |
20130084018 | METHOD OF AND APPARATUS FOR ENCODING DATA - A graphics texture data encoding arrangement in which the texels in a texel block | 04-04-2013 |
20130132737 | CRYPTOGRAPHIC SUPPORT INSTRUCTIONS - A data processing system | 05-23-2013 |
20130141445 | METHODS OF AND APPARATUS FOR PROCESSING COMPUTER GRAPHICS - When carrying out a second, higher level of anti-aliasing such as 8× MSAA, in a graphics processing pipeline | 06-06-2013 |
20130155103 | INTERMEDIATE VALUE STORAGE WITHIN A GRAPHICS PROCESSING APPARATUS - A tile-based graphics processor includes tile processing circuitry that has both a tile buffer and a per-pixel general purpose data store. The per-pixel general purpose data store is read accessible and write accessible by the tile processing circuitry to store intermediate values. These intermediate values are generated by the tile processing circuitry and then consumed by the tile processing circuitry to generate the output values for the tile being processed. | 06-20-2013 |
20130205125 | EXCEPTION HANDLING IN A DATA PROCESSING APPARATUS HAVING A SECURE DOMAIN AND A LESS SECURE DOMAIN - Processing circuitry can operate in a secure domain and a less secure domain. In response to an initial exception from background processing performed by the processing circuitry, state saving of data from a first subset of registers is performed by exception control circuitry before triggering an exception handling routine, while the exception handling routine has responsibility for performing state saving of data from a second subset of registers. In response to a first exception causing a transition from the secure domain from a less secure domain, where the background processing was in the less secure domain, the exception control circuitry performs additional state saving of data from the second set of registers before triggering the exception handling routine. In response to a tail-chained exception causing a transition from the secure domain to the less secure domain, the exception handling routine is triggered without performing an additional state saving. | 08-08-2013 |
20130205389 | DATA PROCESSING APPARATUS AND METHOD FOR PROTECTING SECURE DATA AND PROGRAM CODE FROM NON-SECURE ACCESS WHEN SWITCHING BETWEEN SECURE AND LESS SECURE DOMAINS - A data processing apparatus includes processing circuitry and a data store including a plurality of regions including a secure region and a less secure region. The secure region is configured to store sensitive data accessible by the circuitry when operating in a secure domain and not accessible by the circuitry when operating in a less secure domain. The data store includes a plurality of stacks with a secure stack in the secure region. Stack access circuitry is configured to store predetermined processing state to the secure stack. The processing circuitry further comprises fault checking circuitry configured to identify a first fault condition if the data stored in the predetermined relative location is the first value. This provides protection against attacks from the less secure domain, for example performing a function call return from an exception, or an exception return from a function call. | 08-08-2013 |
20130205413 | DATA PROCESSING APPARATUS AND METHOD USING SECURE DOMAIN AND LESS SECURE DOMAIN - A data processing apparatus | 08-08-2013 |